Removal of Pb²⁺ Ions by ZSM-5/AC Composite in a Fixed-Bed Bench Scale System

Table 4

Yoon-Nelson model parameters for the removal of Pb²⁺ ions by ZSM-5/AC.

Parameter		(min^-1)	(min)
Rate of flow	2 mL/min	0.954	222.3	0.993
	4 mL/min	0.977	182.6	0.965
	6 mL/min	0.987	110.3	0.989
Bed depth	2 cm	0.954	222.3	0.993
	4 cm	0.979	304.9	0.984
	6 cm	0.986	413.7	0.971
Preliminary concentration	250 mg L^-1	0.986	413.7	0.971
	500 mg L^-1	0.963	283.9	0.976
	750 mg L^-1	0.953	171.3	0.955